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Occam's razor principle states that the explanation of any phenomenon should make as few assumptions as possible, eliminating those that make no difference in the observable predictions of the explanatory hypothesis or theory. An intuitive justification of Occam's Razor's admonition against unnecessary hypotheses is a direct result of basic probability theory. By definition, all assumptions introduce possibilities for error; If an assumption does not improve the accuracy of a theory, its only effect is to increase the probability that the overall theory is wrong.


DNA contains genetic instructions for the development of all known organisms including viruses.

Genetic Code

Genetic Code
The genetic code is used by all known forms of life on Earth and possibly outside of the Solar system.

The Cell

The Cell
The cell is smallest unit of an organism and is sometimes called the building block of life.


Young children have ~10 quadrillion (10E16) synapses.


The term "protein" for molecules was proposed in 1838 by Jöns Jakob Berzelius.


Consciousness defies simple definition.

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